Initial position. White has just played , to invade the right side.
Black can fight strongly in the centre. White at a to threaten the eye shape of Black's upper group isn't a serious problem for Black.
Black should cap at . After that
is the natural play to move the weak groups apart. Then
menaces the left side, which is White's major framework.
In the game Black made a direct attack on the white stone in the lower right.
After this diagram and the further plays Black a, White b, Black c, White d, Black's result isn't good. The key cutting stones (marked black stones) have been swallowed up in the centre. The weak points x remain, giving White a chance to reduce the territory Black has taken.
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